package sdk

import (
	"context"
	"encoding/json"
	"fmt"
	"github.com/long/test/httpclient"
	"github.com/long/test/tasktag"
	"github.com/long/test/util"
	"time"

	"nanomsg.org/go-mangos"
	"nanomsg.org/go-mangos/protocol/pair"
	"nanomsg.org/go-mangos/transport/ipc"
	"nanomsg.org/go-mangos/transport/tcp"
)

var SocketManage = make(map[string]SocketContext)

type SocketContext struct {
	Sock    mangos.Socket
	Context context.Context
	Cancel  context.CancelFunc
}

func Init() {

	sdklist := SdkAll() //获取所有sdk
	fmt.Println("sdk list have: ", sdklist)

	SdkCreateTopic(sdklist) // 创建主题

	for _, sdkid := range sdklist { // 创建sdk server
		sdkid, socket, err := NewSdkListen(sdkid, "tcp", "192.168.1.124", 0)
		if err != nil {
			continue
		}
		// 接受管道数据 ==》 发送给 对应的进程
		go send(sdkid, socket, SdkMap[sdkid])

		//从对应进程接受数据 == 》 重新送回到管道
		go Recv(socket)

	}

	go es(SdkMap["es"])

}

//单独处理   es 主题的情况
func es(sdkmsgchan chan SdkMessage) {
	for data := range sdkmsgchan {
		fmt.Println("this data is finish all sdk! ", data)
	}

}

//动态处理
func AutoDelSdk(Newsdklist []string) {
	var oldSdk []string
	for key, _ := range SdkMap {
		oldSdk = append(oldSdk, key)
	}
	sdkChanDel := util.Difference(oldSdk, Newsdklist)

	for key, op := range sdkChanDel {
		if op == "add" {
			SdkMap[key] = make(chan SdkMessage)
			fmt.Println("创建主题 sdk: ", key)
		} else {
			close(SdkMap[key])
			delete(SdkMap, key)
			fmt.Println("删除主题 sdk: ", key)
		}
	}
}

//主题
var SdkMap = make(map[string]chan SdkMessage)

// 发送给算法进程的结构
type SdkMessage struct {
	Cid     string
	Tasklab tasktag.TaskLabel
	Data    []byte
}

//sdk数据 加工器
func SdkData(cid string, taskid string, data []byte) (sdkmsg SdkMessage) {
	sdkmsg.Cid = cid
	sdkmsg.Tasklab = tasktag.TaskMapLab[taskid]
	sdkmsg.Data = data
	return
}

//sdk数据分发器
func SdkSendTopic(sdkmsg SdkMessage) (sdksend string) {
	if sdkmsg.Tasklab.Index < len(sdkmsg.Tasklab.Sdkids) {
		sdksend = sdkmsg.Tasklab.Sdkids[sdkmsg.Tasklab.Index]
	} else {
		sdksend = "es"
	}
	fmt.Println()
	fmt.Println("分发的主题是： ", sdksend)
	fmt.Println()
	return
}

// 调用  http 借口获取摄像机信息
func SdkAll() (sdklist []string) {
	sdklist = httpclient.GetSdk("http://127.0.0.1:8000/data/api-v/sdk/findskdid")
	return
}

// 创建主题
func SdkCreateTopic(sdklist []string) (err error) {
	for _, sdkid := range sdklist {
		SdkMap[sdkid] = make(chan SdkMessage)
		fmt.Println("create sdk channel:  ", sdkid)
	}

	SdkMap["es"] = make(chan SdkMessage)
	fmt.Println("create es channel:  ")

	return nil
}

var UrlPort = 9000

// 创建 sdk server  listen
func NewSdkListen(sdkid string, protocol string, ip string, port int) (sid string, socket SocketContext, err error) {

	ctx, cancel := context.WithCancel(context.Background())

	var url string

	socket.Context = ctx
	socket.Cancel = cancel

	switch protocol {
	case "tcp":
		if port == 0 {
			port = UrlPort
			UrlPort++
		}
		url = fmt.Sprintf("%s://%s:%d", protocol, ip, port)

	case "ipc":
		url = fmt.Sprintf("%s://%s", sdkid)
	}
	fmt.Printf("sdkid= %s  url=%s\n", sdkid, url)

	if socket.Sock, err = pair.NewSocket(); err != nil {
		fmt.Println(sdkid, "can't get new pair socket: ", err.Error())
		return sdkid, socket, err
	}

	socket.Sock.SetOption(mangos.OptionMaxRecvSize, 32*1024*1024)
	socket.Sock.SetOption(mangos.OptionWriteQLen, 10)
	socket.Sock.SetOption(mangos.OptionReadQLen, 10)

	socket.Sock.AddTransport(tcp.NewTransport())
	socket.Sock.AddTransport(ipc.NewTransport())

	if err = socket.Sock.Listen(url); err != nil {
		fmt.Println("socket lisnte error ", sdkid)
	}
	SocketManage[sdkid] = socket
	return sdkid, socket, err
}

func Recv(socket SocketContext) {
	socket.Sock.SetOption(mangos.OptionRecvDeadline, 1*time.Second)
	for {
		select {
		case <-socket.Context.Done():
			fmt.Println("socket close")
			return
		default:
			if msg, err := socket.Sock.Recv(); err != nil {
				//fmt.Printf("%s ", err)
				continue
			} else {

				var repsdkmsg SdkMessage
				var reps interface{}

				err = json.Unmarshal(msg, &reps)
				if err != nil {
					continue
				}

				switch v := reps.(type) {
				case map[string]interface{}:
					//调用计算函数， 分发给下一个主题

					json.Unmarshal(msg, &repsdkmsg)
					nexttopic := SdkSendTopic(repsdkmsg)
					SdkMap[nexttopic] <- repsdkmsg
				case string:
					fmt.Println("this string is: ", v)
				}
			}
		}
	}
}

func send(sdkid string, socket SocketContext, in chan SdkMessage) {
	var v SdkMessage
	var b []byte

	for {
		select {
		case <-socket.Context.Done():
			fmt.Println("socket is close")
		case v = <-in:
			b, _ = json.Marshal(v)
			fmt.Printf("从管道sdkid=%s 接受数据 %d\n", sdkid, len(v.Data))
			if err := socket.Sock.Send(b); err != nil {
				fmt.Println("failed send")
			}
			fmt.Printf("sdkid = %s ,send success:%d \n", sdkid, len(v.Data))
		}
	}
}